1MENDELIAN GENETICS IN DOGS Inheritance of Coloration in Dogs[Assume that the wild-type coloration is something similar to a typical gray wolf in coloration] A locusay ...Partial to complete removal of black pigment resulting in sable (Collies and Shelties) or red to yellow in Boxers, Great Danes, Dachshunds, and other breeds.aw...This gene, agouti or "wild type", which is assumed to be the responsible for the banded (black and yellow) coat of wolves, may also be found in Norwegian Elkhounds. at ... Tan points over the eyes, on the cheeks, sometimes on the chest and feet and under the tail. Examples include Rottweilers, Doberman Pinchers and "tri-color" Collies and Shelties. a ... Non-agouti. A recessive gene that produces a solid black haircoat. It is fairly rare but is found in German Shepherds and Shelties. B locusB+ ...Normal black pigmentation b ... liver (brown) pigmentation. This mutant is responsible for the "red" coloration in Aussies, chocolate Labradors, and liver-spotted Dalmations. C locus C+... Normal full intensity of coloration cch... "Chinchilla" This mutant, when homozygous, partially removes red pigment while leaving black pigment essentially unchanged. Nearly white "yellow" Labrador Retrievers may carry this mutant. This gene may be responsible for black Cur dogs with white markings where the tan ones would normally be located. D locus
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